Patents by Inventor Stephen B. Warrick

Stephen B. Warrick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater
    Patent number: 5230808
    Abstract: A flocculating agent which comprises: a particulate ethylene oxide polymer present in an amount of between about 20 to about 35% by weight; an inert liquid vehicle comprising a mixture of a glycol which is present in an amount between about 25 to about 30% by weight, and glycerine which is present in an amount between about 45 to about 50% by weight, wherein the specific gravity of the ethylene oxide polymer is approximately the same as the specific gravity of the inert liquid vehicle; and a suspension agent which is present in an amount between about 0.4 to about 0.6% by weight, wherein the flocculating agent has a viscosity in the range between about 1800 to about 5900 cps.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: July 27, 1993
    Assignee: Nalco Canada Inc.
    Inventors: Daniel K. Chung, Stephen B. Warrick
  • Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater
    Patent number: 5173208
    Abstract: A flocculating agent which comprises: a particulate ethylene oxide polymer present in an amount of between about 20 to about 35% by weight; an inert liquid vehicle comprising a mixture of a glycol which is present in an amount between about 25 to about 30% by weight, and glycerine which is present in an amount between about 45 to about 50% by weight, wherein the specific gravity of the ethylene oxide polymer is approximately the same as the specific gravity of the inert liquid vehicle; and a suspension agent which is present in an amount between about 0.4 to about 0.6% by weight, wherein the flocculating agent has a viscosity in the range between about 1800 to about 5900 cps.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: December 22, 1992
    Assignee: Nalco Canada Inc.
    Inventors: Daniel K. Chung, Stephen B. Warrick